______ is the Refrigerants removed from a system in any condition without necessarily testing or processing them:

The ventilation rate for repair garages for natural and hydrogen fueled vehicles shall be at least _____ cubic foot per minute per 12 cubic feet of room volume:

Make up air duct insulation installed within _____ of a Type I commercial kitchen hood shall be noncombustible

Air Intake openings shall be located a minimum of _____ from lot lines or buildings on the same lot:

The maximum air temperature within nonmetallic ducts shall not exceed ______ :

Fire dampers are not required at penetrations of shafts where the penetrations are in parking garage exhaust or supply shafts that are separated from other building shafts by not less than  _____ hour fire-resistance-rated construction:

The mechanical draft system vent shall vertically terminate at least ______ below window or gravity air inlet for the building:

The minimum thickness of the vent connector shall be _____ gage for galvanized steel: